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Machine for Pulping and Grinding-Fibrous and 0131161 Material.

No. 232,460. Patented Sept. 21,1880.

f% f z 3 W mil N. PEIERS. PMOTO-U'MQGRAVHQR, WASHINGTON D c UNITEDSTATES PATENT OFFICE.

CHARLES B. COOKE, OF LONDON, AND JAMES COOKE AND GEORGE HIBBERT, OFRICHMOND, ENGLAND.

MACHINE FOR PULPING AND GRINDING FIBROUS AND OTHER MATERIALS.

SPECIFICATION forming'part of Letters Patent No. 232,460, datedSeptember 21, 1880.

Application filed August 19, 1880. (ModeL) Patented in England October14, 1878.

To all whom it may concern Be it known that we, CHARLES EDWARD BRUNSKILLCOOKE, of London, in the county of Middlesex, England, and JAMEs COOKEand GEORGE HIBB'ERT, of Richmond, in the county of York, England, haveinvented a new and useful Improvement in Machines for Pulping andGrinding Fibrous and other Materials, of which the following is aspecification. I

Our improvements relate to apparatus and machinery for washing, beating,pulping, grinding, ragging, disintegrating, shredding, mixing, orpreparing the various materials and fibrous substances used for makingpaperpulp and for other like purposes, or for grinding colors, dyes,paints, and other materials.

Our invention consists in a roll or disk provided with bars or ribs onone face and fitted for revolution within a chamber at the end of acistern o1- trough. The inner surface of the chamber is also faced withbars, between which and the bars on the disk the material is ground, andthe revolving disk is fitted with lifters at its outer edge, which actto carry the material around in the chamber.

The construction and operation will be particularly describedhereinafter with reference to the accompanying drawings, wherein Figure1 is a vertical longitudinal section of the machine. Fig. 2 is a planView. Fig. 3 is a vertical cross-section on line a w of Fig. 2, and Fig.4 is a detail view in enlarged size.

Similar letters of reference indicate corresponding parts.

a is the cistern or shell, which is made of cast-iron or other suitablematerial, and of either oblong or other convenient shape. This shell isdivided by acentral partition, and is formed at one end with a chamberof circular form, which communicates, by a central side opening, withthe space at one side of the central partition, and by a tangentialopening with the space at the other side of the partition.

b is the roll or disk-plate, made of cast-iron or other metal, andprovided with bars or facings c, which we make of chilled iron, bronze,or other metal, and attach on the face of the disk by bolts or othersuitable fastenings. The disk b is within the circular chamber, keyed ona shaft or axle, b, which isfitted for revolution in bearings that arefixed at the outside of the cistern a.

In front of the roll or disk, upon the inner surface of the chamber,there are bars or facings in, similar to those on the disk. The disk I)is to be fitted for movement to and from the bars in by suitabledevices.

As shown in Fig. 3, we form the axle b with a collar working in a groovein the box 0, and fit upon the support of the box a screw, a, for movingthe box, axle, and disk to regulate the distance between thegrinding-faces.

ff are flanges projecting from the edge of disk I), and serving ascentrifugal lifters for the material.

In operation the rags, pulp, or other material to be operated upon isfed into the cistern a, and is drawn by the revolving disk I) throughthe central opening and between the grindingt'acings c m, by which thematerial is ground. The lifters f raise the material as it discharges atthe periphery of the disk, and cause it to pass through the tangentialopening back into 7 the cistern. By these means the material is causedto circulate through the cistern and grinding-chamber until the pulpingor grind ing is complete.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent-- 1. In pulping and grinding machines, therevolving roll or disk provided with bars or facings, combined with acistern for holding the material, and a grinding-chamber having bars orfacings contiguous to the grindingdisk, substantially as shown anddescribed.

2. The centrifugal lifters f, combined with the revolving roll or disk,substantially as 0 and for the purpose set forth.

CHARLES EDWARD BRUNSKILL DOOKE. JAMES COOKIE. GEORGE HIBBERT.

Witnesses to the signature of Charles E. B. Cooke:

FRANCIS H. LAW,

13 Old Square, London, Barrister. RUDOLPH THOMAS BLoMENsroK,

Of the some place, Clerk.

Witnesses to the signatures of James Cooke and George Hibbert:

R. Y. GREEN,

Solicitor, Newcclstle-tqaon-Tyne. R. W. JOHNSON, N 0. 6 Grey street,Newcastle-zwon-Tyne.

